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Show HN: Markdown OKF-Schema Studio for VS Code

A developer released Markdown OKF-Schema Studio, a WYSIWYG rich Markdown editor extension for VS Code, via a Show HN post that drew 1 point and 0 comments. The extension offers first-class frontmatter with validation against a JSONSchema for OpenKnowledge Format documents, Sphinx MyST editing, in-cell table editing, and rendering of mermaid, plantuml and vega/vega-lite graphs without external dependencies, while preserving raw text formatting. The author said the tool is meant for planning work with agents and later as a collaborative surface for small teams, arguing HTML artifacts from coding agents are heavy and cannot be displayed directly in GitLab or GitHub files.

read1 min views2 publishedNov 5, 2026

A WYSIWYG rich Markdown editor for VS Code.

I use agent a lot for planning, and there is not so much real beautiful and confortable Markdown editor. It gets better but i needed several special things: first-class frontmatter with validation, Sphinx MyST edition, in-cell table edition and do not kill my raw text formatting.

I hope the rendering is extra-clean, allowing to edit a paragraph or a admonition. It supports mermaid, plantuml, vega/vega-lite graph without extern dependencies. It also supports all Sphinx MyST and GitHub Flavored Markdown. I also like the custom "radio choice" similar to GFM tick, really useful for decision making directly in Markdown. I use it as an active working document with my agents and later as a rich collaborative surface in small team. HTML artifacts are amazing with coding agents, but heavy, cannot be displayed as it in Gitlab/Github file, and cannot easily keep states such as choices or micro edition.

It is also used to be a great frontmatter editor OKF Schema that gives a JSONSchema to a frontmatter for OpenKnownledge Format document.

Comments URL: [https://news.ycombinator.com/item?id=50382105](https://news.ycombinator.com/item?id=50382105)

Points: 1

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